FastMCP OAuth Proxy token reuse across MCP servers
21Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 7.4epss 0.4%
probabilidade de exploração
0.4%top 71% das CVEs
exploração observada
nãonenhuma fonte reporta
FastMCP is the standard framework for building MCP applications. Prior to version 2.14.2, the server does not properly respect the resource parameter submitted by the client in the authorization and token request. Instead of issuing the token explicitly for the MCP server, the token is issued for the base_url passed to the OAuthProxy during initialization. This issue has been patched 2.14.2.
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Produtos afetados
jlowin · fastmcpReferências
https://access.redhat.com/errata/RHSA-2026:36350https://access.redhat.com/security/cve/CVE-2025-69196https://bugzilla.redhat.com/show_bug.cgi?id=2448179https://github.com/PrefectHQ/fastmcp/security/advisories/GHSA-5h2m-4q8j-pqpjhttps://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-69196.json